Convert AVI to MKV
Free online AVI to MKV converter — no signup, no watermark
Convert AVI (Audio Video Interleave) files to MKV (Matroska Video) format online for free. Our AVI to MKV converter runs entirely in your browser — just drag in your file, click convert, and download the result. No software to install, no account required, and your files stay private.
How to convert AVI to MKV in 4 steps
- 1
Upload your AVI file
Drag and drop your AVI file into the converter, or click to browse from your device. We support files up to 2GB.
- 2
Choose MKV as the output format
MKV is pre-selected. Optionally adjust quality, resolution or bitrate if your file needs custom settings.
- 3
Convert AVI to MKV
Click the convert button. Our converter processes your AVI file and produces a high-quality MKV output, usually in under a minute.
- 4
Download your MKV file
Once conversion is complete, download your MKV file. Your original AVI stays untouched and we delete uploaded files within an hour.
Why convert AVI to MKV?
AVI is a legacy Microsoft container format that preserves high video quality with minimal compression. It remains popular for archival and Windows-based workflows where compatibility with older software matters. MKV is an open-source container format that can hold an unlimited number of video, audio, subtitle and metadata tracks in one file. It's the go-to format for high-quality movie storage and Blu-ray rips. Converting from AVI to MKV is useful when you need high-quality movie storage or want to take advantage of supports unlimited tracks and subtitles.
Top reasons to switch to MKV
- High-quality movie storage
- Multi-language video files
- Blu-ray and DVD archival
- Files with multiple subtitle tracks
AVI vs MKV: side-by-side
AVI
Pros
- + High video quality
- + Wide Windows compatibility
- + Simple structure
Cons
- − Very large file sizes
- − Poor support on modern mobile devices
- − No native streaming support
MKV
Pros
- + Supports unlimited tracks and subtitles
- + Open source and royalty-free
- + Excellent quality preservation
Cons
- − Not natively supported on iOS or Safari
- − Larger files than MP4
- − Limited streaming support
AVI to MKV — Frequently Asked Questions
Is converting AVI to MKV free?
Is converting AVI to MKV free?
Yes, our AVI to MKV converter is 100% free. There are no hidden fees, no signups required, and no watermarks added to your converted MKV files.
Will I lose quality converting AVI to MKV?
Will I lose quality converting AVI to MKV?
Our converter uses high-quality encoding settings to preserve as much of the original AVI quality as possible in the MKV output. For lossless results, choose the "high quality" preset.
How long does AVI to MKV conversion take?
How long does AVI to MKV conversion take?
Most AVI files convert to MKV in 30 seconds to a few minutes, depending on the file size, duration, and your internet connection. Larger files take longer.
Is it safe to upload my AVI file?
Is it safe to upload my AVI file?
Yes. All uploads use encrypted HTTPS connections, files are processed on isolated servers, and converted MKV files are automatically deleted within one hour of conversion.
Can I convert AVI to MKV on mobile?
Can I convert AVI to MKV on mobile?
Absolutely. Our AVI to MKV converter works in any modern browser on iPhone, Android, iPad, Windows, macOS and Linux — no app install required.
What's the maximum file size for AVI to MKV?
What's the maximum file size for AVI to MKV?
You can convert AVI files up to 2GB to MKV for free. For larger files, contact us about our batch and premium options.
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